walling-



(No Model.) 2 sheets-sheet 2. S. P. WALLING.

GRINDING MILL.

Patented Nov. 8

N. PETERS. Phare-uxnngmpnw, wmmman, n.

UNTTE STATES ATnNT Titres.

STEPHEN P. VALLNG, OF SOUTH EDMESTON, NEW YORK.

SPECIFICATION forming para of Leners Patent No. 372.726. dated November 8. 188i?.

Application llled December 10, 1886. Serial No. 221,201.

.To @ZZ when?, 'it may concern:

Be it known that l, STEPHEN l?. WALLING, of South Edmeston, in the county of Otsego and State of New York, have invented certain new and useful Improvements in Grinding- Mills, of which the i'ollowingisaspecification.

My invention relates to that class ot' grind ing1nills in which two horizontal disks or grinding-surfaces are employed, and has reference more particularly to a novel construction of devices, as hereinafter fully set forth and claimed, whereby the upper stone or disk is permitted to adapt or adj ust itselt' tothe runningstone.

In the drawings, Figure l is a vert-ical een tral section through a mill,showing my improvements applied thereto; Figs. 2- and 3, perspective views ofthe details; Figs. 4 and 5, vertical sectional views at right angles to each other, and Fig. 6 a top plan view on the line z e of Fig. 5.

The present invention consists in a novel construction and arrangement of devices which are secured to the mill-casing and the upper stone, and which permit the stone to rock or tip vertically upon horizontal journals in any direction at right angles to each other.

The invention further embraces a novel device for securing the aforesaid mechanism to the upper stone.

A indicates the niill casing, B the upper stone or disk, C the running-stone or disk, and D the mill-spindle, all ef which parts may be of any usual construction, except as hereinafter pointed out.

The form of mill shown in the drawings is the same as that represented in Letters Patent No. 252,158, issued to me January 10, 1882, though it is obvious that various features therein shown, and also herein shown, merely for the purpose of illustration, may be varied without departing` from the spirit of the present invention.

The cap or eoverEofthe niill easing is provided with a central hole, within which is iitted a hub or collar, F, as shown in Figs. l, 2, 3, 4, and 5, which collar is epen from end t0 end. lt is provided with a lateral cireu mferential flange, a, near its upper end, which bears against the under face ofthe cap or (No model.)

cover E, and is further provided with a depending llange or rim, b. Depending from the under face of the flange a are two 1ugs,e e, diametrically opposite to each other, as shown in Figs. 3 and 4, and separated a distance from the depending flange I). The lugs c extend downward, so that their lower edges shall be on line with the lower edge of the flange b, and each ot` the lugs, together with the flange, is provided with a seat or bearing, d, as shown in Figs. 3 and 4.

G represents a collar which in most particulars resembles the collar F, heilig provided with lugs e and an upright flange, b, which are in all respects similar to and correspond with the lugs c and flange b of collar F. It will be noticed, however,that the lugs c c are at right angles to the lugs e c of collar F, and the bearings d in the lugs c and flange b are at right angles to those of collar F, as shown in Fig. 3. The upper edge of flange b and the lower edge of flange b are curved, as shown in Figs. 3, 4, and 5, so asv to permit one collar to rock upon the other.

G2 indicates a collar threaded externally to screw into the collar G,the collar G2 being provided with laterally-extending lugs a2, which are set into the lower face of the stone, and thereby prevent the collar from becoming loose and turning independently of the stone or disk B.

H indicates a ring which surrounds or encireles the iianges b b', the ring extending between the flanges I) b an d the lugs c e, as shown in Figs. 3, 4, 5, and 6. This ring H is provided with two sets of journal or pins, e and e', in the same horizontal plane, the two pins or journals of each set being diainetrieally opposite to each other, while the two sets ot' journals are at right angles to each other, as shown in Figs. 3 and 6.

The pins e c e e project on both sides of the ring H, and two of them, e e, are seated at their inner ends upon the upper edge of ilange b of collar G, while their outer ends are seated in the upper faces of the lugs e e', as shown in Figs. 2, 3, 5, and G. The other set of pins, e e', are seated at their inner and outer ends, respectively, in the flange b and lugscc, as shown in Figs. 2, 3, and 4.

The pins e e' are secured rigidly to the ring IOO .2. y I 3.72,"726 I H and prevented from turning therein, thus ypermitting the collars F and G to swing or oscillate upon the pins or journals, the two collars swinging at right angles to each other, one upon the pins e e and the other upon the pins e e', and it will be seen that the upper stone may thus adapt or adjust itself to the lower-stone or disk.

Caps or platesfwill be secured to the lugs c c', in order that the pins e c may be held to their seats, and in order to regulate the freedom with which the collars F and G may turn upon the pins e e', and for the further purpose of taking up wear these caps will be made ad justable by means of set-screws g, as clearly shown in Figs. 2, 5, and 6. The caps or plates f will, by preference, be .made somewhat elastic.

By making the flanges b b' of the form shown and placing them one above the other they may be brought close together and yet tip or rock freely upon each other.- It will be noticed that a clear and unobstructed passage is left for the feed of the material, and that the escape of material between the collars F G is prevented by the ring H. Y

Having thus described my invention, what I claim is- 1. In combination with casing A, cap E, and disks B C, a collar, F, secured to cap E and provided with a depending flange, b, a collar, G, secured to disk B and provided with an upright ange,b, and a ring, H, encircling the flanges b b and provided with two series of journals e, and e', which latter are pivotally connected, respectively, with the collarsG and F, all substantially as shown.

2. In combination with casing A, cap E, and

disksA B C, a collar, F, secured to cap E and provided with a depending flange, b, curved on its lower edge, substantially as shown, a collar, G, secured to disk B and provided with an upright flange, b, curved to correspond to flange b, a ring, H, encircling the flanges b b', and pins e e', pivotally connecting the flanges with the ring. Y

3. In combination with casing A, cap E, and disk B, collar F, provided with depending iiange b and lugs c c, sockets or bearings d in the flange and lugs,4 collar G, provided with upright iiange b', lugs c c', and bearings d', ring H, encircling the flanges bb and provided with journals e e e e', and plates f, applied to the journals, all substantially as shown.

4. In a grinding-mill, the combination, with casing A, cap E, and disk B, of collars F G, secured, respectively, to the cap and disk, a ring, H, provided with two sets of pins, e e', seated in the collars G and F, respectively, and adjustable plates or caps, asf, applied to t-h pins e e', all substantially as shown. v

5. In a grindingmill, and in combination with the fixed stone B, having an eye, a collar, G, resting upon the upper face of the stone and threaded internally, and a collar, G2, fit ting within the eye, screwing into collar G, and provided with lugs ai, which are set into the lower face of the stone, all substantially as Shown.

In witness whereof I hereunto set my hand in the presence of two witnesses.

STEPHEN I). VALLING.

\Vituesses:

A. J. MANoHEsTnR, WV. H. CAULKI-Ns. 

